.Determine the F statistics (write the result in X.XX) 12. Determine the critical value, F for alpha of .05 (write the result in X.XX) 3. if the variance of route 75 = 8.99 and everything else remains the same. conclude and discuss the results

2. Let X - tp. Verify the mean and variance formulas. (Hint: Let X = p/2UV-1/2.)

Suppose we compute a correlation coefficient between two variable of r= 0. Which of the following must be true. O a. The correlation conditions have not been met O b. There is an outlier present in the scatterplot O c. There is no linear relationship between the two variables O d. There is no relationship at all between the two variables A Click Submit to complete this assessment. A Stat100_Practice..pdf Writing Prompt 3.docx Online Syllabus J....pdf 3 Bios357Schedul...pd ips-D056AE4A- Ips-53E329A5-0A IMG_S E23F-45...p4.movE6-4E6...mp4.mov OCT 」國TO 22 6. 20 F3 F1 O00 F2 F4 F5

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Suppose the mean and variance of variable X are given respectively by μ = 36.2 and Var(X) =4.2. What is the average of the squared values of variable X?

I need help solving part a and b of the following question attached.

Suppose you have access to a database with the variables listed below. Using the two variables BMI(the predictor) and diabetes(the outcome)  Name two types of descriptive statistics you could report specifying the variables BMI and diabetes.

Identifying individuals with a high risk of Alzheimer's disease usually involves a long series of cognitive tests. However, researchers have developed a 7-Minute Screen, which is a quick and easy way to accomplish the same goal. The question is whether the 7-Minute Screen is as effective as the complete series of tests. To address this question, Ijuin et al. (2008) administered both tests to a group of patients and compared the results. The following data represent results similar to those obtained in the study.    7-Minute Screen Cognitive Series 3 11 8 19 10 22 8 20 4 14 7 13 4 9 5 20 14 25 Which statistical test would you select: Answer    H0: Answer H1: Answer What is the coefficient that indicates the strength of the relationship? Answer =Answer What is the standard error? Answer What is the appropriate 95% CI?  [ Answer , Answer ] What is the d-effect size? Answer What is the t-observed? Answer What is the actual p-value? Answer THREE decimal places…

One of the following is the minimum variance unbiased estimator for u. The sample variance. The sample mean. The sample mean square error. The meadian.

A researcher found a significant correlation of .12 between gender (coded as 0 = ‘male’ and 1 = ‘female’) and number of friends at university. If the assigned values of gender were changed to 1 = ‘female’ and 2 = ‘male’, how would this affect the correlation? The strength of the relationship would become weaker The amount of variance explained by the relationship would increase It would become nonsignificantThe sign would change to become negative   A researcher is trying to predict anxiety (measured on a 7-point scale) from exposure to stress (operationalised as the number of stressful life events participants can recall in the last week). She has found a correlation coefficient of r = .54 between anxiety and stress, with a standard deviation of 4.45 for anxiety and a variance of 17.21 for stress. What other information is needed to calculate b? The sums of squares of stressThe sums of products of anxiety and stress The covariance of anxiety and stressNo other information is…